Strains of streptomyces and relevant uses thereof

Abstract

The invention relates to isolates of Streptomyces orientalis Y31014 and Streptomyces melanogenes Y31042-1 can be effectively control whiteflies.The invention also concerns a novel biopesticide and its use to control pests.

What is claimed is:  
     
       1. A biologically pure culture of the micoorganism  Streptomyces melanogenes  Y31042, or a mutant or variant thereof having the characteristics: 
       a) a yellowish pink to brown substrate mycelium with a grayish aerial mycelium with moderate growth in a culture medium selected from the group consisting of yeast extract-malt extract agar, oat meal agar, or inorganic salt agar;  
       b) grown in a culture medium containing a sugar selected from the group consisting of D-glucose, D-xylose, D-fructose, L-arabinose, raffinose, D-mannitol, and I-inositol; and  
       c) being highly virulent to white flies at a dilution of 1:100 to 1:1000 of a culture broth of the microorganism to water.  
     
     
       2. The microorganism of claim  1 , which is under the accession No. ATCC PTA-557. 
     
     
       3. A biopesticide composition comprising an effective amount of at least one biologically pure culture according to any one of claims  1  to  2  and an agriculturally acceptable carrier. 
     
     
       4. A method for controlling a targeted pest comprising applying an effective amount of at least one biologically pure culture according to any one of claims  1  to  2 .